This study quantitatively analyzed Buzz, Squeak, and Rattle (BSR) noises occurring during automotive operation and identified their root causes. Abnormal noises were initially detected during a first test drive and were classified into BSR types based on data from a Noise Observer system. Case analysis revealed that in the 2020 G model, a squeak noise was caused by friction between solid components due to durability degradation and damage to the suspension bushing. In contrast, the 2022 G model exhibited a rattle noise resulting from insufficient structural gaps. As modern vehicles continue to pursue higher performance, safety, and cabin quietness, the reduction in component gaps has increased the likelihood of BSR occurrences. This study demonstrates the effectiveness of diagnosing the root causes of BSR and confirms its practical value in reducing maintenance time and minimizing misdiagnoses.

Abstract
1. 서 론
2. 측정장치 및 방법
    2.1 측정장치
    2.2 측정이론 및 진단방법
    2.3 BSR 소음 측정 및 분석 절차
3. 결과 및 고찰
    3.1 2020년식 G모 델 소음 분석 결과 및 고찰
    3.2 2022년식 G모 델 소음 분석 결과 및 고찰
4. 결 론
References

• 유종구(Hyundai Motor Co.) | Jonggoo Yoo
• 전유재(Professor, Dept. of Interdisciplinary Studies, Yeoju Institute of Technology) | Yujae Jeon Corresponding author
• 이원철(Hyundai Motor Co.) | Woncheol Lee